Perforating and forming apparatus



March '13, 1934. MUTSCHLER 1,950,688

PERFORATING AND FORMING APPARATUS Filed Nov. 4, 1929 2 Sheets-Sheet 1INVENTOR /4LBERT Nurse/a5)? ATTORN EY March 13, 1934.

A. MUT$CHLER PERFORATING AND FORMING APPARATUS Filed Nov. 4, 1929 2Sheets-Sheet 2 H C S Y RT M m flfi N m W T NE E L m Patented Mar. 13,1834 PERFORATING AND FORMING APPARATUS Albert Mutschler, Rochester, N.Y., assignor to d; H. G. Mutschler Ina, Rochester, N. Y.

Application November 4, 1929, Serial No. 404,685

1 Claim.

This invention relates to a perforating and forming apparatus and hasfor its various ob- .lects:

To prcvde an apparatus with which a plurality of dies and punches areoperated to simultaneously produce a plurality of forming or perforatingoperations on a single piece of work.

To provide an apparatus with which a series of perforating or formingoperations may be performed without the aid of the customary punch pressused for such operations.

To produce an apparatus with which a perforating or forming operationcan be performed in full sight of the operator and in a position inwhich the stock to be perforated or formed can be most conveniently andefficiently fed to the apparatus.

To produce an apparatus for perforating or forming operations which isso constructed that the stock to be perforated or formed can be fed toand withdrawn from the apparatus without danger to the operator of theapparatus.

These and other objects of this invention will be apparent from thedrawings, the specification and the appended claim forming a partthereof.

In the accompanying drawings:

Figure 1 is a front elevation of the apparatus and the driving mechanismtherefor.

Figure 2 is an end elevation of the apparatus and the driving mechanismfor it.

Figure 3 is an enlarged detail plan view of the apparatus with a portionof it broken away to illustrate part of the mechanism thereof.

Figure 4 is an enlarged detail section view of the apparatus, thesection being taken on the line 4 4 of Figure 3.

In the several figures of the drawings like reference numerals indicatelike parts.

The apparatus forming the subject matter of my present invention isillustrated in the drawings in a form in which it is particularlyadapted for perforating the wall of sheet metal cups with a plurality ofholes. This of course is only one use for which this particularapparatus can be employed and many other uses will suggest themselves tothose skilled in the art. I therefore do not want to limit myself to theparticular use for the apparatus that is illustrated in the drawings anddescribed in this specification but wish to have it understood that theapparatus with slight modifications and adjustments, which can be madeby any one skilled in the art, is equally adaptable for otherperforating and forming operaticns.

As illustrated in the figures the apparatus is preferably mounted on asuitable angle bracket 1 which supports it in a position in which thestock to be perforated can be conveniently fed thereto by the operatoras will hereinafter be described. The angle bracket in turn is mountedon a suitable bed plate 2 and above it or below it may be mounted thecrank shaft 3 by which the apparatus is actuated. The crank pin 4 of thecrank shaft is connected with the operating arm 20 of the apparatus bymeans of the connecting rod 5 and the universal link 6 in order to givethe operating arm 20 an oscillating motion on the rotation of the crankshaft 3. The crank shaft may be intermittently or continuously operatedin any suitable manner and suitable means may be provided with which therotation of the shaft can be controlled by the operator in order tooperate the apparatus at will.

The apparatus proper comprises a bed plate '7 which is cut away toprovide a bearing for the ring member 8. The top of the bed plate isconically recessed with a series of uniformly spaced radial grooves 9, 9provided in the recess. In the center of the conical recess is provideda cylindrical pocket 10 and in this pocket is mounted the die 10A. Thepunches which cooperate with this die are indicated by referencenumerals 10B, 10B and are provided on the ends of the shanks 11, 11which are mounted to slide and reciprocate in the radial grooves 9, 9. Alink 12 is pivoted to the outer end of each of the shanks 11 and thislink in turn is pivoted to a second link 13 which with its outer end ispivoted to the under side of the conically recessed cover plate 14. Thelinks 12 and 13 thus form a toggle with which the shanks 11 areconnected to the stationary cover plate 14. The cover plate extends overthe bed plate 7 and covers the radial slots 9, 9 to hold the shanks 11,11 in place therein. The cover plate is fastened to the bed plate bymeans of the screws 15, 15 which pass thru the cover plate and arethreaded into the conically recessed portion of the bed plate at pointsbetween the radial slots 9, 9. The cover plate is thus fixed with thebed plate and provides a fixed anchorage to which the outer end of thetoggle is pivoted.

On the ring member 8 are mounted in pairs a series of studs or rollers16 and 1'? which are located so as to project upwardly from the ringmember on each side of the center of the toggle formed by the links 12and 13. On the oscillation of the ring member on the bed plate the studsor rollers 16 and 17 operate to straighten and bend the toggles and indoing so move the shanks 11 back and forth in the radial slots in thebed plate '7. The ring member 8 is oscillated by the segmental pinion 18which meshes with the segmental gear 19 formed in the perimeter of thering member 8. The segmental pinion 18 is provided with an arm 20 to theouter end of which is pivoted the universal link 6.

As above described the universal link 6 and connecting rod 5 arereciprocated by the crank pin 4 of the crank shaft 3. The rotation ofthe crank shaft thus causes the segmental pinion 18 to oscillate whichin turn oscillates the ring member 8 to reciprocate the shanks ll, 11 inthe radial slots in the bed plate '1. The die 10A located in the centerof the bed plate '7 is provided with a hole for each of the punches 1933so that as these punches are reciprocated by the shanks 11 they enterthe die holes in the The metal cut 25 which is placed over the die isthus perforated with a plurality of holes at each oscillation of thering member caused by one revolution of the crank shaft 3.

As illustrated in Figures 1 and 2 the angle bracket 1 supports theapparatus in an angular position which is most convenient for theoperator to feed the material into the center of the apparatus. In thisway the operator can sit or stand in front of the apparatus and place apiece of material on the die in the center of the cover plate to havethe apparatus perforate it and then Withdraw the material from itwithout having to reach very far or place his fingers in jeopardybetween the punch and the die.

I claim:

In a perforating and forming apparatus the combination of a cylindricalbase, a ring member mounted to oscillate on said cylindrical base, saidcylindrical base having a central pocket in the top thereof with radialchannels leading from said pocket, a cover plate having a centralopening therein located on top of said base to cover said radialchannels without covering said central pocket, plungers mounted to slidein said radial channels and held in place therein by said cover plate, atoggle for each of said plungers and connected to one end of each ofsaid plungers and with the other end to said cover plate, studs carriedby said ring member and engaging each side of said toggle to operatesaidtoggle on the oscillation of said ring member, and means foroscillating said ring member.

ALBERT MUTSCHLER.-

